5-Amino-2-(4,6′-dihydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl)-5-oxopentanoic acid

5-Amino-2-(4,6′-dihydroxy-2′,5′,5′,8a′-tetramethyl-6-oxo-3′,4′,4a′,5′,6,6′,7′,8,8′,8a′-decahydro-2′H-spiro[furo[2,3-e]isoindole-2,1′-naphthalen]-7(3H)-yl)-5-oxopentanoic acid

Spiro[2H-furo[2,3-e]isoindole-2,1′(2′H)-naphthalene]-7(3H)-acetic acid, α-(3-amino-3-oxopropyl)-3′,4′,4′a,5′,6,6′,7′,8,8′,8′a-decahydro-4,6′-dihydroxy-2′,5′,5′,8′a-tetramethyl-6-oxo-